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Article #112Re: Cooling attic (and home) by spraying water on roof (shingles) - good/bad?
From: Some Guy
Date: Sun, 26 Jun 2005 03:14
Date: Sun, 26 Jun 2005 03:14
22 lines
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2193 bytes
Probably another reason why you don't see this in residential settings: Patent 4175703: Spray cooling system for gable roof http://www.freepatentsonline.com/patents/us/417/4175703/4175703.pdf In the USA, you can patent almost anything, regardless if it is similar to what is already in practice, or what is generally "known to those skilled in the art". In this case, the above patent (granted in 1979) at the time the use of evaporative roof cooling was well known for industrial / commercial flat roofs. How this guy got a patent for use on a gable roof is beyond me. The patent office is full of examples of things we don't see as consumers because some bone-head thought he could get rich by patenting something trivial and obvious. All he ends up doing is wasting his money on a patent. I would think that the patent has now expired.
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